log CHANGELOG @ 2370:95c082557ffd

age author description
2019-10-08 Chris Cannam Full dates
2019-10-07 Chris Cannam Minor text tweak
2019-09-25 Chris Cannam Update CHANGELOG to reflect name change
2019-09-20 Chris Cannam I think actually this must be v4.0, because of the file format change. Add the beta-release warning for the moment time-frequency-boxes